Skip to main content
Ch.2 - Atoms & Elements
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 4th EditionCh.2 - Atoms & ElementsProblema 110
Capitolo 2, Problema 110

The mass of an average blueberry is 0.75 g and the mass of an automobile is 2.0×103 kg. Find the number of automobiles whose total mass is the same as 1.0 mol of blueberries.

Guida verificata passo dopo passo
1
Determine the mass of 1.0 mol of blueberries. Since the molar mass of a substance is the mass of 6.022 x 10^23 particles (Avogadro's number), multiply the mass of one blueberry by Avogadro's number to find the mass of 1.0 mol of blueberries.
Convert the mass of the automobile from kilograms to grams for consistency in units, as the mass of the blueberry is given in grams. Recall that 1 kg equals 1000 grams.
Calculate the total mass of 1.0 mol of blueberries in grams using the conversion from step 1.
Divide the total mass of 1.0 mol of blueberries by the mass of one automobile (converted to grams in step 2) to find the number of automobiles needed to equal this mass.
Ensure all units are consistent and check calculations for accuracy to ensure the correct number of automobiles is determined.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). For blueberries, the average mass is 0.75 g, which means that one mole of blueberries would weigh 0.75 g multiplied by Avogadro's number (approximately 6.022 x 10^23), allowing us to calculate the total mass of 1.0 mol of blueberries.
Video consigliato:
Percorso guidato
02:11
Molar Mass Concept

Unit Conversion

Unit conversion is the process of converting a quantity expressed in one set of units to another. In this problem, we need to convert the mass of the automobile from kilograms to grams (1 kg = 1000 g) to facilitate a direct comparison with the mass of blueberries, ensuring that both quantities are expressed in the same unit.
Video consigliato:
Percorso guidato
01:56
Conversion Factors

Ratio and Proportion

Ratio and proportion involve comparing two quantities to determine how many times one quantity contains another. In this context, once we have the total mass of 1.0 mol of blueberries and the mass of a single automobile, we can set up a ratio to find out how many automobiles would equal the total mass of the blueberries, allowing us to solve the problem effectively.
Video consigliato:
Percorso guidato
02:14
Neutron-Proton Ratio
Pratica correlata
Domanda del libro di testo

Carbon-12 contains six protons and six neutrons. The radius of the nucleus is approximately 2.7 fm (femtometers) and the radius of the atom is approximately 70 pm (picometers). What percentage of the carbon atom's volume is occupied by the nucleus? (Assume two significant figures.)

1549
views
2
rank
Domanda del libro di testo

A penny has a thickness of approximately 1.0 mm. If you stacked Avogadro's number of pennies one on top of the other on Earth's surface, how far would the stack extend (in km)? [For comparison, the sun is about 150 million km from Earth and the nearest star (Proxima Centauri) is about 40 trillion km from Earth.]

1499
views
Domanda del libro di testo

A pure copper sphere has a radius of 0.935 in. How many copper atoms does it contain? [The volume of a sphere is (4/3)πr3 and the density of copper is 8.96 g/cm3.]

1528
views
Domanda del libro di testo

A pure titanium cube has an edge length of 2.78 in. How many titanium atoms does it contain? Titanium has a density of 4.50 g/cm3.

2759
views
Domanda del libro di testo

Consider the stack of pennies in the previous problem. How much money (in dollars) would this represent? If this money were equally distributed among the world's population of 7.0 billion people, how much would each person receive? Would each person be a millionaire? A billionaire? A trillionaire?

705
views
1
comments